Compass is better than bakelite compass: bakelite is a kind of plastic with high mechanical strength, good insulation, heat resistance and corrosion resistance. The chemical name is phenolic plastic, which is often used to make electrical materials, such as switches, lamp holders, telephone shells and so on.
Compass, also known as compass, is a feng shui detection tool and a commonly used operation tool for managing style. The compass is mainly composed of a magnetic needle in the center of a disk and a series of concentric circles, each of which represents the ancient people in China's understanding of a certain level of information in the cosmic system.